7.1. Routing protocols
  • Routing protocols are used by routing daemons to exchange information about the network.
  • Two classes of routing protocols
    • Interior gateway protocol (IGP) manages routing information within an autonomous system - a collection of networks under the control of a single central authority. IGP concerns more about the cost of each route. The routes with minimum costs are entered into the kernel's routing table.
    • Exterior gateway protocol (EGP) manages routing information among autonomous systems. EGP concerns more about the reachability of a path.
  • Interior gateway protocols
    • Routing Information protocol (RIP).
    • Open shortest path first (OSPF).
    • Interior gateway routing protocol (IGRP).
  • Exterior gateway protocols
    • Exterior gateway protocol (EGP).
    • Border Gateway protocol (BGP).
    • Distance vector multicast routing protocol (DVMRP).

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